No Tests to run for MultiJvm

[Harit Himanshu]

Hello everyone,

I started learning akka-cluster today and was trying to write the multi-ivm test.

I followed all through the document but when I run my application, I see

> ; reload ; clean ; compile ; multi-jvm:test

[info] Loading project definition from /Users/harit/IdeaProjects/libs/akka-cluster-investigation/project

[info] Set current project to akka-cluster-investigation (in build file:/Users/harit/IdeaProjects/libs/akka-cluster-investigation/)

[success] Total time: 0 s, completed Oct 17, 2015 10:08:45 PM

[info] Updating {file:/Users/harit/IdeaProjects/libs/akka-cluster-investigation/}akka-cluster-investigation...

[info] Updating {file:/Users/harit/IdeaProjects/libs/akka-cluster-investigation/}cluster_simple...

[info] Resolving jline#jline;2.12.1 ...

[info] Done updating.

[info] Resolving jline#jline;2.12.1 ...

[info] Done updating.

[info] Compiling 2 Scala sources to /Users/harit/IdeaProjects/libs/akka-cluster-investigation/cluster_simple/target/scala-2.11/classes...

[success] Total time: 1 s, completed Oct 17, 2015 10:08:46 PM

[info] Compiling 1 Scala source to /Users/harit/IdeaProjects/libs/akka-cluster-investigation/cluster_simple/target/scala-2.11/multi-jvm-classes...

[info] Passed: Total 0, Failed 0, Errors 0, Passed 0

[info] No tests to run for MultiJvm

[success] Total time: 1 s, completed Oct 17, 2015 10:08:47 PM

It compiles the class but says no tests to run, My Test looks like  

import akka.remote.testkit.{MultiNodeConfig, MultiNodeSpec}
import akka.testkit.ImplicitSender
import org.scalatest.{BeforeAndAfterAll, MustMatchers, WordSpecLike}


object SimpleClusterListenerSpecConfig extends MultiNodeConfig {
  val cluster = role("cluster")
}

class SimpleClusterListenerSpec extends MultiNodeSpec(SimpleClusterListenerSpecConfig)
with WordSpecLike
with MustMatchers
with BeforeAndAfterAll
with ImplicitSender {

  import SimpleClusterListenerSpecConfig._

  override def initialParticipants: Int = roles.size

  "A SimpleClusterListener" must {
    "wait for all nodes to enter a barrier" in {
      enterBarrier("startup")
    }

    runOn(cluster) {
      enterBarrier("deployed")
      val clusterSelection = system.actorSelection(node(cluster) / "user" / "clusterListener")
      clusterSelection ! Hello
      expectMsg("hello")
    }
  }

  override def beforeAll() = multiNodeSpecBeforeAll()

  override def afterAll() = multiNodeSpecAfterAll()
}

And the entire code is available on GitHub. I would really appreciate if some one could help me spot my issue here.

Thanks

+ Harit Himanshu

[matheus...@gmail.com]

You need create the node class:
class:

class SimpleClusterListenerSpecMultiJvmNode1 extends SimpleClusterListenerSpec
class SimpleClusterListenerSpecMultiJvmNode2 extends SimpleClusterListenerSpec

The class name always created using format XXXMultiJvmNodeN and you create one class per node you want test

[Harit Himanshu]

Thank you friend, that worked well and I was able to run my first multi-ivm test. Here is what my test code looks like.

When I run it, I get

$ sbt clean compile test

[info] Loading project definition from /Users/harit/IdeaProjects/libs/akka-cluster-investigation/project

[info] Set current project to akka-cluster-investigation (in build file:/Users/harit/IdeaProjects/libs/akka-cluster-investigation/)

[success] Total time: 0 s, completed Oct 18, 2015 9:43:50 PM

[info] Updating {file:/Users/harit/IdeaProjects/libs/akka-cluster-investigation/}cluster_simple...

[info] Updating {file:/Users/harit/IdeaProjects/libs/akka-cluster-investigation/}akka-cluster-investigation...

[info] Resolving jline#jline;2.12.1 ...

[info] Done updating.

[info] Resolving jline#jline;2.12.1 ...

[info] Done updating.

[info] Compiling 2 Scala sources to /Users/harit/IdeaProjects/libs/akka-cluster-investigation/cluster_simple/target/scala-2.11/classes...

[success] Total time: 6 s, completed Oct 18, 2015 9:43:56 PM

[info] Compiling 1 Scala source to /Users/harit/IdeaProjects/libs/akka-cluster-investigation/cluster_simple/target/scala-2.11/multi-jvm-classes...

[info] * SimpleClusterListenerSpec

[JVM-1] Run starting. Expected test count is: 2

[JVM-1] SimpleClusterListenerSpecMultiJvmNode1:

[JVM-1] - Illustrate how to start-up a cluster

[JVM-1] - show that SimpleClusterListener receives message

[JVM-1] [WARN] [10/18/2015 21:44:01.571] [SimpleClusterListenerSpec-akka.actor.default-dispatcher-16] [akka://SimpleClusterListenerSpec/user/controller/127.0.0.1:53775-server1] received dead letter from Actor[akka://SimpleClusterListenerSpec/deadLetters]: ClientDisconnected

[JVM-1] Run completed in 1 second, 889 milliseconds.

[JVM-1] Total number of tests run: 2

[JVM-1] Suites: completed 1, aborted 0

[JVM-1] Tests: succeeded 2, failed 0, canceled 0, ignored 0, pending 0

[JVM-1] All tests passed.

[info] Run completed in 37 milliseconds.

[info] Total number of tests run: 0

[info] Suites: completed 0, aborted 0

[info] Tests: succeeded 0, failed 0, canceled 0, ignored 0, pending 0

[info] No tests were executed.

[success] Total time: 5 s, completed Oct 18, 2015 9:44:01 PM

Thank you again for your help

+ Harit